Cast-on-strap mold and method for producing a terminal post comprising an embedded member at one time

ABSTRACT

The present invention relates to a cast-on-strap mold and a method for producing a terminal post comprising an embedded member at one time. The cast-on-strap mold for producing a terminal post comprising an embedded member at one time is disposed with a cavity and a fixing bolt that correspond in size and position to the embedded member are disposed therein, a positioning aperture is disposed thereon, and the embedded member, the positioning aperture and the fixing bolt correspond to one another. The method for producing a terminal post comprising an embedded member at one time uses a cast-on-strap mold for producing a terminal post comprising an embedded member at one time and it comprises the following steps: install the embedded member into the cast-on-strap mold and secure it in position by the fixing bolt, cast and weld the terminal post and the plate pack, and then loosen the fixing bolt to take out the cast and welded terminal post and plate pack. The present invention increases the effects of the strength and the connection of the plate pack, the terminal post and the embedded member which are formed in one piece at one time, and it also significantly increases the capacity of the storage battery for conducting high electric current. The production steps are saved. The cost of production is lowered. The level of automation and the quality of the production can be enhanced.

TITLE OF THE INVENTION

Cast-on-strap mold and method for producing a terminal post comprisingan embedded member at one time

BACKGROUND OF THE INVENTION

The present invention relates to a cast-on-strap mold and a method forproducing a terminal post comprising an embedded member at one time,which are mainly used in the production of storage batteries of highcapacity.

In the prior art, the common method of producing a terminal post for astorage battery is to cast it with an embedded member as its head, andthen weld the head of the terminal post to a plate pack. When thecapacity of the storage battery is relatively high and the workingcurrent exceeds a certain level, and as the relatively poor connectionof the plate pack and the terminal post during welding leads to insecureconnection and high contact resistance, when the power output isrelatively high, the storage battery burns out easily. Further, thewelding process is complicated, the cost of production is high and thelevel of automation is low. All these adversely affect the quality andthe power output of the storage battery.

BRIEF SUMMARY OF THE INVENTION

In view of the aforesaid disadvantages now present in the prior art, theobject of the present invention is to provide a cast-on-strap mold and amethod for producing a terminal post comprising an embedded member atone time.

To attain this, the present invention generally comprises acast-on-strap mold for producing a terminal post comprising an embeddedmember at one time, which is characterized in that a cavity and a fixingbolt that correspond in size and position to the embedded member aredisposed therein, a positioning aperture is disposed thereon, and theembedded member, the positioning aperture and the fixing bolt correspondto one another.

The present invention further comprises a method for producing aterminal post comprising an embedded member at one time, which ischaracterized in that a cast-on-strap mold for producing a terminal postcomprising an embedded member at one time is used and the methodcomprises the following steps: install the embedded member into thecast-on-strap mold and secure it in position by the fixing bolt, castand weld the terminal post and the plate pack, and then loosen thefixing bolt to take out the cast and welded terminal post and platepack.

The casting and welding of the terminal post and the plate pack of thepresent invention comprises the following steps: immerse thecast-on-strap mold into a molten lead alloy, take out the cast-on-strapmold and cool it down to the temperature for casting and welding,immerse the part of the plate pack to be connected to the terminal postinto the molten lead alloy in the cast-on-strap mold, and the moltenlead alloy in the cast-on-strap mold cools down to form a welding layerto unite the terminal post and the plate pack together in one piece.

In comparison with the prior art, the present invention has thefollowing advantages and effects: As the terminal post is formed at onetime and is cast and welded to the plate pack at the same time, itincreases the effects of the strength and the connection of the platepack, the terminal post and the embedded member which are formed in onepiece at one time, and it also significantly increases the capacity ofthe storage battery for conducting high electric current. The highestpower output is about 30 percent higher than the original power output.The production steps are saved. The cost of production is lowered. Thelevel of automation and the quality of the production can be enhanced.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the construction of the terminal post of the embodiment ofthe present invention.

FIG. 2 shows the construction of the embodiment of the present inventionduring casting and welding.

FIG. 3 shows the method for producing the embodiment of the presentinvention.

FIG. 4 shows the construction of the storage battery with the embodimentproduced by the present invention.

DETAILED DESCRIPTION OF THE INVENTION

As illustrated in FIGS. 1 and 2, the terminal post 6 produced by theembodiment of the present invention is disposed with an embedded member6-1 and a welding layer 6-2 that are cast and formed at one time. Theembedded member 6-1 is disposed with a connecting thread 6-3. Theconnecting thread 6-3 corresponds to that on a connector of anelectrical appliance. The embedded member 6-1 is made of copper, and thewelding layer on its outer surface is made of lead alloy. At thismoment, as the connecting thread 6-3 faces up, the connector of theelectrical appliance can easily be screwed in. As the terminal post 6 isformed at one time and is cast and welded to the plate pack 5, itincreases the effects of the strength and the connection of the platepack 5, the terminal post 6 and the embedded member 6-1 which are formedin one piece at one time. If the output direction of the terminal post 6is required to be changed to another direction for output, a connectorwith the desired direction for output can be added.

As illustrated in FIG. 2, the present invention further comprises acast-on-strap mold 12 for casting and welding of the terminal post 6 asmentioned above. The cast-on-strap mold 12 is disposed with a cavity 13that corresponds in size and position to the embedded member 6-1. Thecast-on-strap mold 12 is disposed with a positioning aperture 16, andthe embedded member 6-1, the positioning aperture 16 and the fixing bolt15 correspond to one another. When the embedded member 6-1 is fixed onthe positioning aperture 16 by the fixing bolt 15, the embedded member6-1 has to cover the positioning aperture 16 completely.

As illustrated in FIG. 3, the present invention further comprises themethod for producing the terminal post 6 as mentioned above whichcomprises the following steps: install the embedded member 6-1 into thecast-on-strap mold 12 and secure it in position by the fixing bolt 15,cast and weld the terminal post 6 and the plate pack 5, and then loosenthe fixing bolt 15 to take out the cast and welded terminal post 6 andplate pack 5. The installation of the embedded member 6-1 into thecast-on-strap mold 12 and the securing of which in position by thefixing bolt 15 further comprises: the connecting thread 6-3 of theembedded member 6-1 faces down aiming at the positioning aperture 16,the fixing bolt 15 passes through the positioning aperture 16 and screwson the connecting thread 6-3 tightly, so that the end surface of theconnecting thread 6-3 of the embedded member 6-1 securely engages withthe bottom of the cast-on-strap mold 12, and the embedded member 6-1 ispositioned accurately and covers the positioning aperture 16 completely.

The casting and welding of the terminal post 6 and the plate pack 5 ofthe present invention can comprise the following steps: immerse thecast-on-strap mold 12 into a molten lead alloy (at this moment, themolten lead alloy at a temperature higher than the temperature forcasting and welding fills up the cavity 13 completely), take out thecast-on-strap mold 12 and cool it down to the temperature for castingand welding (usually at about 375° C.), immerse the part of the platepack 5 to be connected to the terminal post 6 into the molten lead alloyin the cast-on-strap mold 12, and the molten lead alloy in thecast-on-strap mold 12 cools down to form a welding layer 6-2 to unitethe terminal post 6 and the plate pack 5 together in one piece.

As illustrated in FIG. 4, the storage battery with the embodimentproduced by the present invention comprises a battery cover 1, a batterycase 2, a plate pack 5 and a terminal post 6. As the terminal post 6 isformed at one time and is cast and welded to the plate pack 5 at thesame time, it increases the effects of the strength and the connectionof the plate pack 5, the terminal post 6 and the embedded member 6-1which are formed in one piece at one time, and it also significantlyincreases the capacity of the storage battery for conducting highelectric current. The highest power output is about 30 percent higherthan the original power output. The production steps are saved. The costof production is lowered. The level of automation and the quality of theproduction can be enhanced.

1. A cast-on-strap mold for producing a terminal post comprising anembedded member at one time, which is characterized in that a cavity anda fixing bolt that correspond in size and position to the embeddedmember are disposed therein, a positioning aperture is disposed thereon,and the embedded member, the positioning aperture and the fixing boltcorrespond to one another.
 2. A method for producing a terminal postcomprising an embedded member at one time, which is characterized inthat a cast-on-strap mold for producing a terminal post comprising anembedded member at one time is used and the method comprises thefollowing steps: install the embedded member into the cast-on-strap moldand secure it in position by the fixing bolt, cast and weld the terminalpost and the plate pack, and then loosen the fixing bolt to take out thecast and welded terminal post and plate pack.
 3. The method forproducing a terminal post comprising an embedded member at one time asin claim 2, in which the casting and welding of the terminal post andthe plate pack comprises the following steps: immerse the cast-on-strapmold into a molten lead alloy, take out the cast-on-strap mold and coolit down to the temperature for casting and welding, immerse the part ofthe plate pack to be connected to the terminal post into the molten leadalloy in the cast-on-strap mold, and the molten lead alloy in thecast-on-strap mold cools down to form a welding layer to unite theterminal post and the plate pack together in one piece.